Hey I am 21.I usually have regular periods and my cycle is of 32 days.But last month my period came after 35 days and from 6th day of my period to 12th day I got brown discharge and now its 38 days but still I did not get my periods.Instead I m having cramps in my abdomen and constipation too.What may be the reason behind it.Am I pregnant as 6 months ago I had unprotected sex but I did nothing in these six months.